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authorw0den <w0den@live.com>2015-05-11 17:58:20 +0200
committerw0den <w0den@live.com>2015-05-11 17:58:20 +0200
commitdc29c6dc9069650d69496635643f00ab5e52067e (patch)
tree72248af85a93b258e32df67224804717f201ea3b
parent0b978ddf678281ad8c1ab263040fd108be6c926f (diff)
Improve Cache Query String behaviour
Typically, in most cases, we do not need to cache all the Query String variables. That's why I suggest to improve `Cache Include Query String` behaviour — allow the developer to independently specify which variables should be cached. For example, consider a query to the following URL address: http://site.com/search?q=query&page=2&session=abcd&utm_source=web In this case we don't need to build md5 hash for entire query string, because `session` or `utm_source` can be different for all users. The only variables which should be used for md5 hash should be `q` and `page`. Thus, in `config.php` we can use `$config['cache_query_string'] = array('page', 'q');`. So: `$config['cache_query_string'] = FALSE;` → Cache Include Query String is disabled `$config['cache_query_string'] = TRUE;` → Cache Include Query String is enabled for all `$config['cache_query_string'] = array('page', 'q');` → enabled only for specified variables
-rw-r--r--system/core/Output.php33
1 files changed, 27 insertions, 6 deletions
diff --git a/system/core/Output.php b/system/core/Output.php
index f1859ccf6..4aed62a86 100644
--- a/system/core/Output.php
+++ b/system/core/Output.php
@@ -556,9 +556,16 @@ class CI_Output {
.$CI->config->item('index_page')
.$CI->uri->uri_string();
- if ($CI->config->item('cache_query_string') && ! empty($_SERVER['QUERY_STRING']))
+ if (($cache_query_string = $CI->config->item('cache_query_string')) && !empty($_SERVER['QUERY_STRING']))
{
- $uri .= '?'.$_SERVER['QUERY_STRING'];
+ if (is_array($cache_query_string))
+ {
+ $uri .= '?'.http_build_query(array_intersect_key($_GET, array_flip($cache_query_string)));
+ }
+ else
+ {
+ $uri .= '?'.$_SERVER['QUERY_STRING'];
+ }
}
$cache_path .= md5($uri);
@@ -646,9 +653,16 @@ class CI_Output {
// Build the file path. The file name is an MD5 hash of the full URI
$uri = $CFG->item('base_url').$CFG->item('index_page').$URI->uri_string;
- if ($CFG->item('cache_query_string') && ! empty($_SERVER['QUERY_STRING']))
+ if (($cache_query_string = $CFG->item('cache_query_string')) && !empty($_SERVER['QUERY_STRING']))
{
- $uri .= '?'.$_SERVER['QUERY_STRING'];
+ if (is_array($cache_query_string))
+ {
+ $uri .= '?'.http_build_query(array_intersect_key($_GET, array_flip($cache_query_string)));
+ }
+ else
+ {
+ $uri .= '?'.$_SERVER['QUERY_STRING'];
+ }
}
$filepath = $cache_path.md5($uri);
@@ -729,9 +743,16 @@ class CI_Output {
{
$uri = $CI->uri->uri_string();
- if ($CI->config->item('cache_query_string') && ! empty($_SERVER['QUERY_STRING']))
+ if (($cache_query_string = $CI->config->item('cache_query_string')) && !empty($_SERVER['QUERY_STRING']))
{
- $uri .= '?'.$_SERVER['QUERY_STRING'];
+ if (is_array($cache_query_string))
+ {
+ $uri .= '?'.http_build_query(array_intersect_key($_GET, array_flip($cache_query_string)));
+ }
+ else
+ {
+ $uri .= '?'.$_SERVER['QUERY_STRING'];
+ }
}
}